Monday, January 18, 2010

Fuel Rail Mods

The car has braided stainless steel fuel lines with -6AN fittings all the way from the fuel cell to the fuel rail. However the one weak link was the attachment of the ss hoses to the stock fuel rail barbed steel tubes - the hoses were just pushed onto the barbs and secured with hose clamps. I decided to modify the fuel rail to accept a proper -6AN fitting to attach to the ss hoses with a swivel hose end.
I measured the fuel rail tubing and determined it was made from 8mm o.d. tubing. After some searching the Internet, I found http://www.discounthydraulichose.com who sell a line of metric compression fittings and adapters to convert them to JIC 37 degree flare fittings, which will connect up to a -6AN hose end.

The first job was to cut the barbs off the fuel rail tubing - I used an air powered cutoff tool - and filed the ends smooth. Then I removed the paint. The photo shows one of the two barbs removed and I'm holding the 8mm tube nut and sleeve.


Next, slide the tube nut and sleeve over the fuel rail tube, and screw it onto the JIC adapter.


The finished article. I jst need to add some -6AN swivel hose ends to my fuel lines and they will connect right up to the fuel rail - no more hose clamps.


Here are the part numbers from DiscountHydraulicHose:
9605S-06-L08-14 | 3/8" Male JIC x 8mm Tube / M14x1.5 Port (Steel)
9201LL-08 | DIN 2353 LL Metric Tube Nut, 8mm Tube (Steel)
9202LL-08 | DIN 2353 LL Metric Tube Sleeve/Cutting Ring, 8mm Tube (Steel)

2 comments:

Unknown said...

Great information! I had a bit of fuel seeping out of this connection this evening on my VR6 Corrado. Adjusted the clamps for now but I better look into it fast...

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